Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e0e60215552d4d40caf581a8d3247203fe948fe7
Commit: e0e60215552d4d40caf581a8d3247203fe948fe7
Parent: d94a983526cb868658c958ab689410dc1c6a31f3
Author: Stefan Richter <[EMAIL PROTECTED]>
AuthorDate: Sun Feb 3 23:08:58 2008 +0100
Committer: Stefan Richter <[EMAIL PROTECTED]>
CommitDate: Sat Feb 16 15:40:34 2008 +0100
firewire: fw-sbp2: wait for completion of fetch agent reset
Like the old sbp2 driver, wait for the write transaction to the
AGENT_RESET to complete before proceeding (after login, after reconnect,
or in SCSI error handling).
There is one occasion where AGENT_RESET is written to from atomic
context when getting DEAD status for a command ORB. There we still
continue without waiting for the transaction to complete because this
is more difficult to fix...
Signed-off-by: Stefan Richter <[EMAIL PROTECTED]>
---
drivers/firewire/fw-sbp2.c | 39 ++++++++++++++++++++++++++++-----------
1 files changed, 28 insertions(+), 11 deletions(-)
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 4a118fb..32b50f1 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -603,29 +603,46 @@ sbp2_send_management_orb(struct sbp2_logical_unit *lu,
int node_id,
static void
complete_agent_reset_write(struct fw_card *card, int rcode,
- void *payload, size_t length, void *data)
+ void *payload, size_t length, void *done)
{
- struct fw_transaction *t = data;
+ complete(done);
+}
+
+static void sbp2_agent_reset(struct sbp2_logical_unit *lu)
+{
+ struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
+ DECLARE_COMPLETION_ONSTACK(done);
+ struct fw_transaction t;
+ static u32 z;
- kfree(t);
+ fw_send_request(device->card, &t, TCODE_WRITE_QUADLET_REQUEST,
+ lu->tgt->node_id, lu->generation, device->max_speed,
+ lu->command_block_agent_address + SBP2_AGENT_RESET,
+ &z, sizeof(z), complete_agent_reset_write, &done);
+ wait_for_completion(&done);
}
-static int sbp2_agent_reset(struct sbp2_logical_unit *lu)
+static void
+complete_agent_reset_write_no_wait(struct fw_card *card, int rcode,
+ void *payload, size_t length, void *data)
+{
+ kfree(data);
+}
+
+static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu)
{
struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
struct fw_transaction *t;
- static u32 zero;
+ static u32 z;
- t = kzalloc(sizeof(*t), GFP_ATOMIC);
+ t = kmalloc(sizeof(*t), GFP_ATOMIC);
if (t == NULL)
- return -ENOMEM;
+ return;
fw_send_request(device->card, t, TCODE_WRITE_QUADLET_REQUEST,
lu->tgt->node_id, lu->generation, device->max_speed,
lu->command_block_agent_address + SBP2_AGENT_RESET,
- &zero, sizeof(zero), complete_agent_reset_write, t);
-
- return 0;
+ &z, sizeof(z), complete_agent_reset_write_no_wait, t);
}
static void sbp2_release_target(struct kref *kref)
@@ -1086,7 +1103,7 @@ complete_command_orb(struct sbp2_orb *base_orb, struct
sbp2_status *status)
if (status != NULL) {
if (STATUS_GET_DEAD(*status))
- sbp2_agent_reset(orb->lu);
+ sbp2_agent_reset_no_wait(orb->lu);
switch (STATUS_GET_RESPONSE(*status)) {
case SBP2_STATUS_REQUEST_COMPLETE:
-
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